Insulation Calculator

Calculate potential savings from improved home insulation. Discover how proper insulation can reduce your heating costs and improve comfort.

Insulation Savings Calculator

Calculate potential savings from home insulation

Monthly energy usage

Cost per kilowatt-hour

Total living space size

Insulation Benefits

Why proper insulation is essential for energy efficiency and comfort

Cost Savings

Reduce heating and cooling costs by up to 30%

Comfort

Maintain consistent temperature throughout your home

Environment

Reduce carbon footprint and energy consumption

Types of Insulation

Understanding different insulation materials and their applications

1

Wall Insulation

Cavity wall and solid wall insulation options

2

Loft Insulation

Most cost-effective insulation with highest savings

3

Floor Insulation

Underfloor insulation for ground floor rooms

4

Double Glazing

Window and door upgrades for heat retention

  1. 1

    Measure Areas Needing Insulation

    Calculate square footage for: attic (length Ɨ width), walls (height Ɨ perimeter - windows/doors), basement/crawl space. Prioritize attic first - accounts for 25-35% of heat loss and easiest to upgrade.

  2. 2

    Check Current R-Value

    Measure existing insulation thickness and identify type. Fiberglass: 1 inch = R-3.2, cellulose: R-3.7, spray foam: R-6.5. No insulation = R-1. Use flashlight to check attic - should see at least 10-12 inches.

  3. 3

    Determine Target R-Value

    Look up recommended R-value for your climate zone. Cold climates: Attic R-49 to R-60, walls R-18 to R-21. Moderate: Attic R-38 to R-49, walls R-13 to R-15. Warm: Attic R-30 to R-38.

  4. 4

    Select Insulation Type

    Choose material: Fiberglass batts (cheapest, DIY-friendly, R-3.2/inch), blown cellulose (good for attics, R-3.7/inch), spray foam (best performance, air sealing, R-6.5/inch, professional install). Consider budget and target R-value.

  5. 5

    Calculate Savings and ROI

    Calculator shows installation cost, annual energy savings, and payback period. Attic insulation typically pays back in 2-7 years through reduced heating/cooling bills. Factor in comfort improvements and increased home value.

Pro Tip: Use Ctrl+Enter to calculate quickly, or Ctrl+R to reset the form.

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